In the wake of the Court's decisions in United States v. Windsor, declaring section 3 of DOMA unconstitutional, and Perry v. Hollingsworth, holding that the "proponents" of Proposition 8 lacked standing to appeal a federal judge's declaration of Prop 8's unconstitutionality, many questions remain.

"After a 12-day bench trial, the District Court declared Proposition 8 uncon- stitutional, permanently enjoining the California officials named as defendants from enforcing the law, and “direct- ing the official defendants that all persons under their control or supervision” shall not enforce it. Perry v. Schwarzenegger, 704 F.Supp. 2d 921, 1004 (ND Cal. 2010).

Received copy of Supreme Court opinion dated 06/26/2013. The judgment or mandate of this Court will not issue for at least twenty-five days pursuant to Rule 45. Should a petition for rehearing be filed timely, the judgment or mandate will be further stayed pending this Court's action on the petition for rehearing. Supreme Court No: 12-144. [8682306] [10-16696, 11-16577].

One of the best discussions of this issue is by ConLawProf Marty Lederman over at SCOTUSblog. Lederman asks "even if Judge Walker’s injunction should have been limited to the
protection of the plaintiffs before him—so what? That injunction
nevertheless governs the case, and it will be operative, regardless of
whether it should have been more tailored." He concludes that Justice Kennedy, dissenting in Perry will be proven correct that “the Court’s
opinion today means that a single district court can make a decision
with far-reaching effects that cannot be reviewed.”

The second question is one that is being voiced less, but is worth considering: Why are there no opinions by Justices Sotomayor, Ginsburg, Kagan, and Breyer? Justice Ginsburg, who made headlines with her "skim milk" comment during oral argument in Windsor, could have effectively written a concurring opinion that might have counter-balanced some of the arguments in Alito's separate dissenting opinion regarding the function of marriage. ConLawProf David Cohen over at FeministLawProfessors ConLawProf argues that the lack of opinions matters:

By remaining silent, not only are the liberal Justices depriving us from
learning their particular views, but they are depriving future
litigants the opportunity to use their strong reasoning to further their
cause. After all, the logic in today’s concurring opinions often
becomes the logic in tomorrow’s majority opinion.